CN216485431U - Lithium battery pack aging detection device capable of preventing detection omission - Google Patents
Lithium battery pack aging detection device capable of preventing detection omission Download PDFInfo
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- CN216485431U CN216485431U CN202122886254.6U CN202122886254U CN216485431U CN 216485431 U CN216485431 U CN 216485431U CN 202122886254 U CN202122886254 U CN 202122886254U CN 216485431 U CN216485431 U CN 216485431U
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Abstract
The utility model provides an anti-missing-detection lithium battery pack aging detection device which comprises an MCU module, a charging control module, a discharging detection module, a communication module and an early warning signal detection module. The utility model can not only realize the conventional aging test, but also verify whether the over-voltage and under-voltage early warning signals output by the battery pack are correct; and the power supplementing time can be controlled in the aging test process, so that whether the detection alarm threshold value is in a proper range can be judged.
Description
Technical Field
The utility model relates to the field of lithium battery packs, in particular to a leak-proof lithium battery pack aging detection device.
Background
In order to ensure safety, most battery packs are matched with safety functions, such as charger access detection, charger removal detection, overvoltage alarm release, undervoltage alarm release and the like, and in order to check whether the functions are normal, the battery packs need to be subjected to aging test before leaving a factory; however, the existing aging detection device only judges whether the electric quantity is qualified or not, cannot judge whether an alarm signal is correct or not, cannot determine whether an alarm threshold value is in a proper range or not when the signal level is converted, and cannot effectively control the time for supplementing the electric quantity.
Disclosure of Invention
In order to solve the problems, the utility model provides an anti-missing-detection lithium battery pack aging detection device.
The main content of the utility model comprises:
a lithium battery pack aging detection device capable of preventing detection omission comprises an MCU module, a charging control module, a discharging detection module, a communication module and an early warning signal detection module; wherein the content of the first and second substances,
the charging control module is connected with the MCU module, detects an external charger access signal and receives a control signal of the MCU module to control charging time;
the discharge detection module is connected with the MCU module and is used for detecting an access signal of the lithium battery pack;
the early warning signal detection module is connected with the MCU module and the BMS of the lithium battery pack, acquires an overcharge early warning signal, an overdischarge early warning signal and a corresponding voltage signal of the lithium battery pack and transmits the overcharge early warning signal, the overdischarge early warning signal and the corresponding voltage signal to the MCU module;
the communication module is used for connecting the MCU module and an external upper computer and receiving a control command of the external upper computer;
the MCU module includes a microprocessor chip U1.
Preferably, the charging control module includes a charging input interface J0, a charging output interface J1, and a charging RELAY, pin 1 of the charging RELAY is connected to a dc power supply through a first charging resistor R86, and pin 2 is connected to pin 1 through the first charging diode D10; the pin 3 of the charging interface is connected with the charging input interface J0 and the C-ADC pin of the microprocessor chip U1, and the charging input interface J0 is used for connecting an external charger; a RELAY1 pin of the microprocessor chip U1 is connected with a pin 2 through a second charging diode D1, a second charging resistor R10, a charging triode Q1 and a third charging resistor R11; and the charging output interface is connected with a charging port of the lithium battery pack.
Preferably, the discharge detection module includes a discharge input interface J2, a discharge output interface J3, a first discharge resistor R23 and a second discharge resistor R25, the discharge input interface J2 is connected to the lithium battery pack, the discharge output interface J3 is connected to an external load, and the first discharge resistor R23 and the second discharge resistor R25 are connected in series between the positive electrode of the discharge input interface J2 and the P-ADC pin of the microprocessor chip U1.
Preferably, the early warning signal module includes an early warning interface J6, a first early warning resistor R79, a second early warning resistor R80, a third early warning resistor R81, a fourth early warning resistor R68, and a fifth early warning resistor R69; the early warning interface J6 is used for being connected with a BMS of a lithium battery pack and receiving state data of the lithium battery pack, and the early warning interface J6 is connected with an NTC pin of the microprocessor chip U1 through a first early warning resistor R79, connected with a Vuv pin of the microprocessor chip U1 through a second early warning resistor R80, connected with a Vov pin of the microprocessor chip U1 through a third early warning resistor R81, and connected with a C-DET pin of the microprocessor chip through a fourth early warning resistor R68 and a fifth early warning resistor R70.
Preferably, the communication module includes a first communication unit and a second communication unit connected in parallel, the first communication unit includes a first communication circuit and a first communication interface, and the second communication unit includes a second communication circuit and a second communication interface.
Preferably, the first communication circuit is connected with an RX3 pin, an R/D-485 pin and a TX3 pin of the microprocessor chip U1, and the first communication interface is an RS485 interface; the second communication circuit is connected with a CAN-RX pin and a CAN-TX pin of the microprocessor chip U1, and the second communication interface is a CAN communication interface.
Preferably, the intelligent monitoring system further comprises a power supply module, wherein the power supply module is used for providing a direct current power supply for the MCU module, the charging control module, the discharging detection module, the communication module and the early warning signal detection module.
The utility model provides an anti-missing-detection lithium battery pack aging detection device, which has the following beneficial effects:
(1) the method can not only realize the conventional aging test, but also verify whether the over-voltage and under-voltage early warning signals output by the battery pack are correct;
(2) the power supplementing time can be controlled in the aging test process, so that whether the detection alarm threshold value is in a proper range or not can be judged.
Drawings
FIG. 1 is an overall functional block diagram of the present invention;
FIG. 2 is a circuit diagram of a charge control module of the present invention;
FIG. 3 is a circuit diagram of a discharge detection module according to the present invention;
FIG. 4 is a circuit diagram of an early warning signal module;
FIG. 5 is a circuit diagram of a first communication unit;
fig. 6 is a circuit diagram of the second communication unit.
Detailed Description
The technical scheme protected by the utility model is specifically explained in the following by combining the attached drawings.
Please refer to fig. 1 to 6. The utility model provides a leakage-detection-preventing lithium battery pack aging detection device, which comprises an MCU module, a charging control module, a discharging detection module, a communication module and an early warning signal detection module; not only can realize conventional aging testing, including the detection of functions such as charger access, battery package access, overcharge, overdischarge, can also control the benefit electric time among the aging process to whether the threshold value that detects the warning when signal level converts is in suitable within range, can also verify simultaneously that battery package output's excessive pressure and undervoltage early warning signal are correct.
The charging control module is connected with the MCU module, detects an external charger access signal and receives a control signal of the MCU module to control charging time; the MCU module includes a microprocessor chip U1. Specifically, the MCU module includes a processor chip of a model STM32F103C8T6, the charging control module includes a charging input interface J0, a charging output interface J1, and a charging RELAY, a pin 1 of the charging RELAY is connected to a dc power supply through a first charging resistor R86, and a pin 2 of the charging RELAY is connected to a pin 1 through a first charging diode D10; the pin 3 of the charging interface is connected with the charging input interface J0 and the C-ADC pin of the microprocessor chip U1, and the charging input interface J0 is used for connecting an external charger; a RELAY1 pin of the microprocessor chip U1 is connected with a pin 2 through a second charging diode D1, a second charging resistor R10, a charging triode Q1 and a third charging resistor R11; the charging output interface is connected with a charging port of the lithium battery pack; namely, an external charger is accessed through the charging input interface J0, a lithium battery pack to be detected is accessed through the charging output interface J1, and when the external charger is accessed, the MCU module receives the level change, so that the test of the charger access function can be realized; meanwhile, the MCU module sends a control signal to the charging control module to control the charging time, so that whether the alarm threshold value is in a proper range or not can be detected when the signal is converted.
Meanwhile, the early warning signal detection module is connected with the MCU module and the BMS of the lithium battery pack, acquires an overcharge early warning signal, an overdischarge early warning signal and a corresponding voltage signal of the lithium battery pack and transmits the overcharge early warning signal, the overdischarge early warning signal and the corresponding voltage signal to the MCU module; specifically, the early warning signal module comprises an early warning interface J6, a first early warning resistor R79, a second early warning resistor R80, a third early warning resistor R81, a fourth early warning resistor R68 and a fifth early warning resistor R69; the early warning interface J6 is used for being connected with a BMS of a lithium battery pack and receiving state data of the lithium battery pack, and the early warning interface J6 is connected with an NTC pin of the microprocessor chip U1 through a first early warning resistor R79, connected with a Vuv pin of the microprocessor chip U1 through a second early warning resistor R80, connected with a Vov pin of the microprocessor chip U1 through a third early warning resistor R81, and connected with a C-DET pin of the microprocessor chip through a fourth early warning resistor R68 and a fifth early warning resistor R70; the early warning signal module can acquire the overcharge detection and the overdischarge detection signals of the lithium battery pack to complete the aging test of the function, and can acquire the voltage values corresponding to the lithium battery pack during the overcharge and the overdischarge, so that whether the overvoltage and undervoltage early warning signals output by the lithium battery pack are correct or not can be verified.
The discharging detection module is connected with the MCU module and is used for detecting an access signal of the lithium battery pack; specifically, the discharge detection module includes a discharge input interface J2, a discharge output interface J3, a first discharge resistor R23 and a second discharge resistor R25, the discharge input interface J2 is connected to a lithium battery pack, the discharge output interface J3 is connected to an external load, and the first discharge resistor R23 and the second discharge resistor R25 are connected in series between the positive electrode of the discharge input interface J2 and the P-ADC pin of the microprocessor chip U1.
In addition, the aging test device supports various communication modes with an upper computer, is connected with the MCU module and an external upper computer through the communication module, and receives a control command of the external upper computer;
in one embodiment, the communication module includes a first communication unit and a second communication unit connected in parallel, the first communication unit includes a first communication circuit and a first communication interface, and the second communication unit includes a second communication circuit and a second communication interface. Specifically, the first communication circuit is connected with an RX3 pin, an R/D-485 pin and a TX3 pin of the microprocessor chip U1, and the first communication interface is an RS485 interface; the second communication circuit is connected with a CAN-RX pin and a CAN-TX pin of the microprocessor chip U1, and the second communication interface is a CAN communication interface.
In addition, the utility model also comprises a power supply module which is used for providing a direct current power supply for the MCU module, the charging control module, the discharging detection module, the communication module and the early warning signal detection module.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The lithium battery pack aging detection device capable of preventing detection omission is characterized by comprising an MCU module, a charging control module, a discharging detection module, a communication module and an early warning signal detection module; wherein the content of the first and second substances,
the charging control module is connected with the MCU module, detects an external charger access signal and receives a control signal of the MCU module to control charging time;
the discharge detection module is connected with the MCU module and is used for detecting an access signal of the lithium battery pack;
the early warning signal detection module is connected with the MCU module and the BMS of the lithium battery pack, acquires an overcharge early warning signal, an overdischarge early warning signal and a corresponding voltage signal of the lithium battery pack and transmits the overcharge early warning signal, the overdischarge early warning signal and the corresponding voltage signal to the MCU module;
the communication module is used for connecting the MCU module and an external upper computer and receiving a control command of the external upper computer;
the MCU module includes a microprocessor chip U1.
2. The lithium battery pack aging detection device for preventing detection omission according to claim 1, wherein the charging control module comprises a charging input interface J0, a charging output interface J1 and a charging RELAY, pin 1 of the charging RELAY is connected with a direct current power supply through a first charging resistor R86, and pin 2 of the charging RELAY is connected with pin 1 through a first charging diode D10; the pin 3 of the charging interface is connected with the charging input interface J0 and the C-ADC pin of the microprocessor chip U1, and the charging input interface J0 is used for connecting an external charger; a RELAY1 pin of the microprocessor chip U1 is connected with a pin 2 through a second charging diode D1, a second charging resistor R10, a charging triode Q1 and a third charging resistor R11; and the charging output interface is connected with a charging port of the lithium battery pack.
3. The lithium battery pack aging detection device for preventing detection omission according to claim 1, wherein the discharge detection module comprises a discharge input interface J2, a discharge output interface J3, a first discharge resistor R23 and a second discharge resistor R25, the discharge input interface J2 is connected to the lithium battery pack, the discharge output interface J3 is connected to an external load, and the first discharge resistor R23 and the second discharge resistor R25 are connected in series between the positive electrode of the discharge input interface J2 and the P-ADC pin of the microprocessor chip U1.
4. The lithium battery pack aging detection device capable of preventing detection omission according to claim 1, wherein the early warning signal detection module comprises an early warning interface J6, a first early warning resistor R79, a second early warning resistor R80, a third early warning resistor R81, a fourth early warning resistor R68 and a fifth early warning resistor R69; the early warning interface J6 is used for being connected with a BMS of a lithium battery pack and receiving state data of the lithium battery pack, and the early warning interface J6 is connected with an NTC pin of the microprocessor chip U1 through a first early warning resistor R79, connected with a Vuv pin of the microprocessor chip U1 through a second early warning resistor R80, connected with a Vov pin of the microprocessor chip U1 through a third early warning resistor R81, and connected with a C-DET pin of the microprocessor chip through a fourth early warning resistor R68 and a fifth early warning resistor R70.
5. The lithium battery pack aging detection device of claim 1, wherein the communication module comprises a first communication unit and a second communication unit connected in parallel, the first communication unit comprises a first communication circuit and a first communication interface, and the second communication unit comprises a second communication circuit and a second communication interface.
6. The leak-proof lithium battery pack aging detection device as claimed in claim 5, wherein the first communication circuit is connected with the RX3 pin, the R/D-485 pin and the TX3 pin of the microprocessor chip U1, and the first communication interface is an RS485 interface; the second communication circuit is connected with a CAN-RX pin and a CAN-TX pin of the microprocessor chip U1, and the second communication interface is a CAN communication interface.
7. The lithium battery pack aging detection device of claim 1, further comprising a power module, wherein the power module is used for providing a direct current power supply for the MCU module, the charging control module, the discharging detection module, the communication module and the early warning signal detection module.
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| CN202122886254.6U CN216485431U (en) | 2021-11-23 | 2021-11-23 | Lithium battery pack aging detection device capable of preventing detection omission |
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| CN202122886254.6U CN216485431U (en) | 2021-11-23 | 2021-11-23 | Lithium battery pack aging detection device capable of preventing detection omission |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068432A (en) * | 2023-03-06 | 2023-05-05 | 广州疆海科技有限公司 | Aging test method, device and system for energy storage equipment and storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116068432A (en) * | 2023-03-06 | 2023-05-05 | 广州疆海科技有限公司 | Aging test method, device and system for energy storage equipment and storage medium |
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